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Document Replacement Policy by Web Site Popularity

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2008, 13(1), pp.227-232
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

유행석 1,  장태무 1

1동국대학교

Accredited

ABSTRACT

General web caches save documents temporarily into themselves on the basis of those documents. And when a corresponding document exists within the cache on user's request, web cache sends the document to corresponding user. On the contrary, when there is not any document within the cache, web cache requests a new document to the related server to copy the document into the cache and then turn it back to user. Here, web cache uses a replacement policy to change existing document into a new one due to exceeded capacity of cache. Typical replacement policy includes document-based LRU or LFU technique and other various replacement policies are used to replace the documents within cache effectively. However, these replacement policies function only with regard to the time and frequency of document request, not considering the popularity of each web site. Based on replacement policies with regard to documents on frequent requests and the popularity of each web site, this paper aims to present the document replacement policies with regard to the popularity of each web site, which are suitable for latest network environments to enhance the hit-ratio of cache and efficiently manage the contents of cache by effectively replacing documents on intermittent requests by new ones.

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